Welcome to the 3Si Website the home of OM.Net.

If you are looking for a company that can provide you with a fully flexible, highly configurable feature rich CRM, Membership, Events and Sales Management application suite AND all the services to deliver that solution in your organisation, including project management, implementation consultancy, training and software development all for a fixed price then you are in the right place. 3Si are a privately owned and privately funded company, and we specialise in providing services and solutions to the not-for-profit sector which our company owner directors have successfully been doing so since the launch of the original Open Market product suite in 1993. Read more